I had an error when İ run the code

hey guys , ı am trying to run this code (İN MATLAB ) but it gives me error , can you explain and solve it to me ??

urgently !!!

function[r]=chegg(x)
r=[];
r=[r 1];
curr=x(1);
for i=2:1:length(x)
    if(curr==x(i))
        r= [r r(i-1)+1]; 
    else
        curr=x(i);
        r=[r 1];
    end
end

function[r]=chegg(x)

↑

Error: Function definition are not supported in this context. Functions can only be created as local or nested functions in code files.

[Torsten]

You miss an end statement after the function "chegg".

[Jan]

Avoid the term "urgently" - see https://www.mathworks.com/matlabcentral/answers/29922-why-your-question-is-not-urgent-or-an-emergency

Answer 1

[Jan]

The error message is clear already:

Functions can only be created as local or nested functions in code files.

So where did you create this function? In the command window?

By the way, simplify:

r=[];
r=[r 1];

by

r = 1;

A simpler version of the complete function:

function r = chegg(x)
r = ones(size(x));
for i = 2:length(x)
    if x(i-1) == x(i)
        r(i) = r(i-1) + 1; 
    end
end
end

You can even omit the IF command:

function r = chegg(x)
r = ones(size(x));
for i = 2:length(x)
    r(i) = (x(i-1) == x(i)) * r(i-1) + 1; 
end
end